dupont water-resistive barriers installation guidelines · continue to wrap and cut away the excess...

DuPont™ Tyvek® Water-Resistive Barriers Installation GuidelinesHelPInG you GeT THe joB Done RIGHT

Version 2

2Copyright ©2008 E. I. du Pont de Nemours and Company. All Rights Reserved. v.2

Table of ContentsApplicable Products ..................................................................................................................................................................2

Recommended Materials .........................................................................................................................................................2

Code Requirements ..................................................................................................................................................................3

General Instructions .................................................................................................................................................................3

Special Considerations .............................................................................................................................................................3

Installation Instructions .............................................................................................................................................................4

Continuity

Terminations ........................................................................................................................................................................6

Gable Ends ...........................................................................................................................................................................6

Cantilever Floors ..................................................................................................................................................................6

Penetrations .........................................................................................................................................................................7

Handling Tears and Holes ....................................................................................................................................................7

Tilt Walls ...................................................................................................................................................................................8

DuPont™ Flashing Systems Integration ....................................................................................................................................9

Façade Considerations ...........................................................................................................................................................10

Addendum: Use of Temporary Fastening Methods................................................................................................................11

Applicable ProductsWater-Resistive Barriers (WRB)

Product dimensions AreA

DuPont™ Tyvek® HomeWrap® 3 ft x 100 ft 300 sq ft 3 ft x 165 ft 495 sq ft 5 ft x 200 ft 1,000 sq ft 9 ft x 100 ft 900 sq ft 9 ft x 150 ft 1,350 sq ft 10 ft x 100 ft 1,000 sq ft 10 ft x 150 ft 1,500 sq ft

DuPont™ Tyvek® StuccoWrap® 5 ft x 200 ft 1,000 sq ft

DuPont™ Tyvek® DrainWrap™ 9 ft x 125 ft 1,125 sq ft 10 ft x 125 ft 1,250 sq ft

DuPont™ Tyvek® ThermaWrap™ 5 ft x 150 ft 750 sq ft 9 ft x 100 ft 900 sq ft

DuPont™ Tyvek® CommercialWrap® 5 ft x 200 ft 1000 sq ft 10 ft x 125 ft 1250 sq ft

Installation Accessories

Product tyPe QuAntity

DuPont™ Tyvek® Tape 2” Bulk Pack 36 rolls/case 3” Bulk Pack Dispenser 24 rolls /case

DuPont™ Tyvek® Metallized Tape 2” x 100’ Rolls 12 rolls/case

DuPont™ Tyvek® Wrap Caps for 16 gauge; available in 2000 per box Crossfire® Cap Stapler 7/8”, 1-1/4”, and 1-1/2” lengths

DuPont™ Tyvek® Wrap Caps for 16 gauge; 3/8” length 2016 per box Stinger™ Cap Hammer

Recommended Materials• DuPont™ Tyvek® Water-Resistive Barrier

• DuPont™ Tyvek® Tape

• DuPont™ Tyvek® Wrap Caps or Recommended Fasteners (see step 3)

• DuPont™ Weatherization Sealant or compatible Caulks and Sealants – See the DuPont Building Science Bulletin

“Compatibility Guidelines for Building Sealants” for additional guidance


Water-Resistive Barrier (WRB) Code RequirementsThe 2006 International Building Code (Section 1403.2) and the 2006 International Residential Code (Section R703.1) require

a water-resistive barrier behind the exterior veneer. This water-resistive barrier must be equivalent to ASTM D226 Type 1

#15 Felt. DuPont™ Tyvek® water-resistive barriers exceed the performance of ASTM D226 felt and are recognized as water-

resistive barriers by the following code evaluation reports:

• ICC-ESLegacyReportER-4000:DuPont™ Tyvek® HomeWrap®, DuPont™ Tyvek® StuccoWrap®, DuPont™

Tyvek® DrainWrap™

• ICC-ESLegacyReport98-46:DuPont™ Tyvek® HomeWrap®, DuPont™ Tyvek® StuccoWrap®, DuPont™ Tyvek® DrainWrap™

• ICC-ESLegacyReportNER-642:DuPont™ Tyvek® HomeWrap®, DuPont™ Tyvek® StuccoWrap®, DuPont™

Tyvek® DrainWrap™

• ICC-ESLegacyReport95105D:DuPont™ Tyvek® HomeWrap®, DuPont™ Tyvek® StuccoWrap®, DuPont™ Tyvek®

CommercialWrap®

• ICC-ESESR-1993:DuPont™ Tyvek® ThermaWrap™

General Instructions The most effective time to install DuPont™ Tyvek® water-resistive barriers is when:

• wallsareconstructed

• roofsheathingisinstalled

• stepflashingsandkickoutflashingsareinstalled

• BeFore the windows and doors are set

If you want to install windows and doors prior to the water-resistive barrier, please refer to the DuPont™ Flashing Systems

Installation Guidelines, Flashing BeFore water-resistive barrier section which will direct you back to this guide at the

appropriate step.

Ifthehousehaswindowsanddoorsalreadyinstalledandtheyareflashedbe sure to integrate the WrB by following the duPont™ Flashing systems integration section in this guide.

Note:IfDuPont™FlexWrap™andapronareused,installtheWRBundertheapronwithDuPont™ Tyvek® and ensure

propershingling.Ifanon-selfadheringsillflashingproductisused,pleasemaintainpropershingling.

Special Considerations 1. DuPont™ Tyvek® StuccoWrap™ and DuPont™ Tyvek® DrainWrap™ shall be installed with drainage grooves vertical, going

up and down.

2. To help optimize the installed R-Value benefits of DuPont™ Tyvek® ThermaWrap™ it should be installed with shiny,

metallic side facing towards a clear ¾ inch minimum airspace. Without an airspace, DuPont™ Tyvek® ThermaWrap™ will

still act as a water-resistive barrier.

3. DuPont requires that DuPont™ Tyvek® HomeWrap®, DuPont™ Tyvek® StuccoWrap®, DuPont™ Tyvek® DrainWrap™ and

DuPont™ Tyvek® ThermaWrap™ be covered within 4 months (120 days) of its installation. DuPont™ Tyvek®

CommercialWrap® must be covered within 9 months (270 days) of its installation.


DuPont™ Tyvek® Water-Resistive Barriers Installation Guidelines

Installation InstructionsStart at the bottom of the structure to ensure proper shingling occurs throughout the installation. Proper shingling is required

to provide for water shedding and to prevent water entering the wall system.

Step 4

Unroll directly over windows and doors. Upper layer of

water-resistive barrier should overlap bottom layer of WRB

by a minimum of 6”.

Refer to the DuPont™ Flashing Systems Installation Guidelinestoprepareandflashwindowanddooropening.

Note:Ifwindowsarealreadyinstalled,theDuPont™ Tyvek® water-resistive barrier shall be integrated with proper shinglingwithwindowflashings.IfDuPont™ FlexWrap™ and apron are used, install the water-resistive barrier under the apron to ensure proper shingling. If non-self adhering sill flashingisused,installthewater-resistivebarrierunderthebottomofthesillflashingtomaintainpropershingling.

Step 5

All vertical seams shall be taped with DuPont™ Tyvek® Tape.

• Formaximumairpenetrationresistance,wheninstalling

as an air barrier, all horizontal seams shall also be taped.

Taping all vertical and horizontal seams, and taping or

sealing all terminations (including, but not limited to,

roof-wall interfaces and sill plates) is part of the

requirement to obtain the DuPont™ Tyvek® Products

MaterialandLaborResidential10-yearLimitedWarranty.

Recommend three inch (3”) DuPont™ Tyvek® Tape when

taping horizontal laps for DuPont™ Tyvek® StuccoWrap™ and

DuPont™ Tyvek® DrainWrap™. DuPont™ Tyvek® Metallized

Tape is required for taping DuPont™ Tyvek® ThermaWrap™.

Step 6

After water-resistive barrier is installed refer to the

DuPont™ Flashing Systems Installation Guidelines to

prepareandflashwindowsanddoors.

Step 1

UNWRAProllatcorner,leaving6”to12”inchesvertical

overlap.

Printed stud marks are available on some DuPont™ Tyvek®

products to aid in aligning with the studs. (e.g. studmarks

are 8” apart for DuPont™ Tyvek® HomeWrap®)

Step 2

Roll should be plumb. Bottom edge of roll should extend

over sill plate interface at least 2”. For maximum air

leakage reduction (when installing as an air barrier), seal

wrap at the bottom of the wall with sealant (i.e. DuPont™

Weatherization Sealant), DuPont™ Tyvek® Tape, or DuPont™

StraightFlash™. Extend to bottom of sill plate for slab on

grade foundations. For stucco exteriors integrate with

weep screed.

Step 3

Secure DuPont™ Tyvek® water-resistive barrier to the stud.

Fasteners should be spaced no closer than 6” and no

further than 18” on vertical and horizontal stud lines. Use

one or more of the recommended fasteners below for use

with DuPont™ Tyvek® water-resistive barriers:

• DuPont™ Tyvek® Wrap Cap nails

• DuPont™ Tyvek® Wrap Cap screws

• DuPont™ Tyvek® Wrap Cap Staples for Stinger™

• 1.0inchminimumcrownstaples(exceptwheninstalling

DuPont™ Tyvek® over foam sheathing)

Please see the Addendum: Use of Temporary Fastening

Methods in this guide for more information on alternative

fastening schedules and requirements.

Note:Donotfastenwithin9”ofroughopeninghead.

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1

2

3

4

5

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Copyright ©2008 E. I. du Pont de Nemours and Company. All Rights Reserved. v.2

6

Minimum 6” overlap

6”-12”Overlap



Continuity

terminationsIt is important to maintain the continuity of the water-

resistive barrier from top to bottom with proper shingling.

Continue wrapping all the way up the structure. The

entire wall surface shall be wrapped, including

unconditioned spaces.

LapDuPont™ Tyvek®overallflashing(e.g.walltoroof

intersectionsandthru-wallflashings).

Weep screeds and expansion joints need to be integrated

withflashingsandthewater-resistivebarrier.

Gable endsContinue to wrap and cut away the excess WRB to

completely cover the Gable End.

Lap duPont™ tyvek® over all flashing (e.g. wall to roof intersections and thru-wall flashings).

Cantilever FloorsWrap the DuPont™ Tyvek®underanduptheCantileverfloor

and fold the DuPont™ Tyvek® up the sides of the Cantilever

wall a minimum of 6”. Tape all corners. Top layer of WRB

should go over bottom layer a minimum of 6”.

Note:Gettheinsidecornerastightaspossibleusinga1x4

or similar.

7

1 2

3

Tears Holes

1

2 3

2“Minimum

6“Minimum

DuPont™ Tyvek®

Overlap

1 2

3


penetrationsThere are many types of penetrations including dryer vents,

bathroom exhaust fans, exterior electrical outlets, exterior

lights, gas lines, etc.

Seal the DuPont™ Tyvek® around all electrical, HVAC and

plumbing penetrations with DuPont™ Weatherization

Sealant, DuPont™ Tyvek® Tape, or DuPont™ Flashing

Systems products.

Starttapingorflashingatbottomofpenetrations,shingling

upper tape over bottom tape.

Productsthathaveflangesshouldbeintegratedintothe

water-resistive barrier using DuPont™ Tyvek® Tape or

DuPont™ Flashing Systems products.

Handling tears and HolesDuring the course of installing the WRB, minor tears may

occur. Be sure to tape all tears. Tears can easily be covered

with DuPont™ Tyvek® Tape (2” or 3”) or DuPont™ Flashing

Systems products.

Largerholes(greaterthan1”)mayrequireyoutocutapiece

of DuPont™ Tyvek® WRB to cover the hole. Keep in mind

shingling.

Make a cut 2” above the hole and extending a minimum of

2” on each side of the hole. Measure and cut a piece of

DuPont™ Tyvek®. Tuck the cut piece of DuPont™ Tyvek®

underneath the tear. Tape along the perimeter by starting at

bottom of tear, shingling Upper tape over bottom tape.



Tilt Wall InstructionsStep 1 Unroll and secure DuPont™ Tyvek® WRB over the wallsection.Leaveenoughlaptoensureaminimum6”overlap of the WRB on all sides except top of the wall. TheseflapsallowforaDuPont™ Tyvek®-to-DuPont™ Tyvek® seal with adjacent sides. Make sure the stud marks printed on the DuPont™ Tyvek® line up with the first stud and that the roll is plumb.

Step 2 When starting a wall section, fold the beginning sideflapovertheverticalsideofthestudandsecure.Trimoffexcess.Ensurethatthebottomflapoverhangsenough so that, when the wall is tilted upright, it overlaps the sill plate.

Step 3 As each wall section is raised, ensure that the bottomflapsoverlapthesillplateandthatthesideflapsareon the exterior of the house.

Step 4Fastenthesideflapsandsecurethebottomflaptothe foundation. For maximum air leakage reduction (when installing as an air barrier), seal wrap at the bottom of the wall with DuPont™ Weatherization Sealant, DuPont™ Tyvek® Tape or DuPont™ StraightFlash™.

Step 5 All vertical seams shall be taped with DuPont™ Tyvek® Tape. For maximum air penetration resistance, when installing as an air barrier, all horizontal seams shall also be taped.

Taping all vertical and horizontal seams is part of the requirement to obtain the DuPont™ Tyvek® Products MaterialandLaborResidential10-yearLimitedWarranty.

Recommend three inch (3”) DuPont™ Tyvek® Tape when taping horizontal laps with DuPont™ Tyvek® StuccoWrap® and DuPont™ Tyvek® DrainWrap™. DuPont™ Tyvek® Metallized Tape is required for taping DuPont™ Tyvek® ThermaWrap™.

Step 6 After water-resistive barrier is installed refer to the DuPont™ Flashing Systems Installation Guidelines to prepareandflashwindowsanddoors.

9

DO NOT CUT!through

DuPont™ FlexWrap™

or apron.

A

B

A

B


DuPont™ Flashing Systems Integration If windows and doors have not been installed reference the

DuPont™ Flashing Systems Installation Guidelines to

prepare the rough opening.

Ifwindowsanddoorsarealreadyflashed,thenfollow

these last 2 integration steps to tie the water-resistive

barrierintotheflashing.

Step 1A. Verify that the water-resistive barrier is properly shingled

with the bottom of the apron.

B. Cut as shown to expose window and apron. do not cut through duPont™ FLexWrAP™ or APron.

Step 2A. Tape all seams as shown. do not tAPe at bottom of

window.

B. At the head, continuous tape seams as shown with DuPont™ Tyvek® Tape; if an air barrier is not required or if additional drainage is desired, then skip-tape at the head.



Façade ConsiderationsWater-resistive barrier performance is dependent upon the ability of the façade to drain. You must consider the following for specific façades.

StuccoWhen stucco is installed over wood-based sheathing the 2006 International Building Code (Section 2510.6) and the 2006 International Residential Code (Section R703.6.3) require “a water-resistive vapor-permeable barrier with a performance at least equivalent to two layers of Grade D paper” or a layer of water-resistive barrier which is separated from the stucco by an “intervening layer”. When two layers are required by code and DuPont™ Tyvek® water-resistive barriers are used behind stucco they should be separated from the stucco by a second layer of DuPont™ Tyvek® water-resistive barrier, a layer of Grade D building paper, felt, rigid foam board or the paper backing of paper-backed lath. The first layer (directly over sheathing or studs) serves as the wall system’s water-resistive barrierandisintegratedwithwindowanddoorflashings,theweepscreedatthebottomofthewallandanythrough-wallflashingsorexpansionjoints.LathshallbeinstalledovertheinterveninglayerinaccordancewithASTMC1063-03StandardSpecificationforInstallationofLathingandFurringtoReceiveInteriorandExteriorPortland Cement-Based Plaster and applicable codes. Rigid foam board, when installed over DuPont™ Tyvek® water-resistive barrier as an intervening layer, will provide enhanced structural support to the DuPont™ Tyvek® layer and if installed within 24 hours of the DuPont™ Tyvek® layer may reduce the required number of fasteners used for the attachment of the DuPont™ Tyvek® water-resistive barrier.

Brick The 2006 International Residential Code (Section R703.7.4.2) requires a nominal 1 inch airspace separating the brick from the water-resistive barrier. The Brick Industry Association recommends a 1 inch air-space in front of wood stud construction and a 2 inch air-space in front of steel stud construction. Consistent with these requirements and recommendations, DuPont™ Tyvek® water-resistive barriers shall be separated from the brick veneerbyanominal1inchair-space.Windowanddoorflashing,andthrough-wallflashingshallbeintegratedwiththe DuPont™ Tyvek® layer ensuring proper shingling. For maximum moisture management and drying of the wall system the airspace in front of the DuPont™ Tyvek® shall be vented to the exterior at the top and bottom of the wall. Some types of brick ties will act as additional fasteners for water-resistive barriers, and, if installed within 24 hours of the DuPont™ Tyvek® layer may reduce the required number of fasteners used for the initial attachment of the DuPont™ Tyvek® water-resistive barrier.

Stone VeneerThe 2006 International Building Code (Section 1405.6) requires two layers of water-resistive barrier behind stone (natural, manufactured, synthetic) veneers over wood frame construction. When two layers are required by code and DuPont™ Tyvek® water-resistive barriers are used behind stucco, they should be separated from the stone and mortar by a second layer of DuPont™ Tyvek® water-resistive barrier, a layer of grade D building paper, felt, rigid foam board or the paper backing of paper-backed lath. The first layer (directly over sheathing or studs) serves as thewallsystem’swater-resistivebarrierandshallbeintegratedwithwindowanddoorflashings,theweepscreedatthebottomofthewallandanythrough-wallflashingsorexpansionjoints.

Wood SidingDuPont™ Tyvek® water-resistive barriers and wood siding shall be installed according to manufacturer’s instructions, industrystandardsandapplicablecodes.AsrecommendedbytheWesternRedCedarLumberAssociationand U.S.ForestProductLaboratory,woodsidingshouldbeprimedonallsixsidesbeforeinstallation.Inhighexposureinstallations, enhanced drainage and water management may be provided by using DuPont™ Tyvek® DrainWrap™, by installing a drainage mesh over the water-resistive barrier or by creating rainscreen cladding with a larger airspace behind the siding using furring strips. If furring is installed over DuPont™ Tyvek® water-resistive barrier to create a rainscreen, the primary fastener spacing can exceed 18”.

Fiber Cement SidingDuPont™ Tyvek® water-resistive barriers and fiber cement siding shall be installed according to manufacturer’s instructions, industry standards and applicable codes. In high exposure installations, enhanced drainage and water management may be provided by using DuPont™ Tyvek® DrainWrap™ by installing a drainage mesh over the water-resistive barrier or by creating rainscreen cladding with a larger airspace behind the siding using furring strips. If furring is installed over DuPont™ Tyvek® water-resistive barrier to create a rainscreen, the primary fastener spacing can exceed 18”.

Vinyl SidingVinyl Siding is installed directly over DuPont™ Tyvek® water-resistive barriers. Vinyl siding shall be installed in accordance with manufacturer’s instructions, industry standards and applicable codes, including ASTM D4756-06 Standard Practice for Installation of Rigid Poly(Vinyl Chloride) (PVC) Siding and Soffit.


Fastener selection and fastening schedule is a function of

holding power during exposure and durability while in

service. DuPont installation guidelines require the use of

cap fasteners (nail, staple and screw) and 1” crown staples

as the means for permanently attaching DuPont™ Tyvek®

water-resistive barriers. In addition to fastener selection,

DuPont requires a permanent fastener schedule between

6 to 18 inches, anchored to the studs.* These fasteners

and schedule are considered a permanent means of

attachment and provide substantial holding power during

exposure and in the case of cap fasteners, provide

additional protection against moisture and air infiltration at

the fastener locations particularly for cladding applications

that are in intimate contact with the water-resistive barrier

or provide minimal drainage. These fastening guidelines

minimize the number of penetrations while maintaining a

balance of product durability during exposure. Sheathing,

except for structural OSB and structural plywood, is not a

fastening base and should not be relied on as the fastening

base. This includes but is not limited to foam, fiberboard

and plaster sheathing materials.

Use of recommended permanent fasteners at reduced

schedules, other mechanical fasteners such as smaller

staples (slap staples) and adhesives are considered

temporary fastening methods because they do not have

substantial holding power and may not provide adequate

durability while in service. Temporary fasteners should not

be relied upon to permanently attach a water-resistive

barrier. Because these fasteners have limited holding

power, they are not supported by DuPont as the primary

means of attachment.

Temporary fastening methods can be used if the following

guidelines are followed:

• Temporaryfasteningmethodsshallonlybeusedtotack

the DuPont™ Tyvek® in place when a permanent

fastener is installed immediately after the temporary

fasteners are installed. In this case, permanent

fasteners include cladding fasteners such as brick ties,

lath fasteners for traditional stucco, external foam board

fasteners, or siding installed with nails. Cladding shall

be installed according to applicable building codes and

industry standards.

• Whenusingadhesives,verticalstripsareacceptable

spaced approximately every 24 to 36 inches or along

every other stud line. Vertical strips may be applied at

the sheathing outer face or directly to the studs for open

stud construction. When using adhesives, care must be

taken to not cover the surface excessively since this

may impact the vapor permeability of the wall system in

that region. Adhesives should be evaluated for

compatibility to DuPont™ Tyvek® water-resistive barriers.

• Whenusingtemporarymechanicalfasteners,they

should be used minimally to tack the water resistive

barrier in place. Small staple fasteners are acceptable

with OSB, plywood and exterior gypsum sheathing only.

Small staple fasteners should not be used with

fiberboard or foam sheathing. Temporary fastener

schedule should not exceed 4 fasteners per square yard.

Tape all tears and localized damage. For larger holes

(greater than 1”) follow DuPont™ Tyvek® Water-Resistive

Barriers Installation Guidelines.

• Onlycappedtemporaryfastenersshallbeusedwith

3-coat stucco and stone veneer applications unless an

intervening layer is used.

Selection and use of temporary fastening methods is an

option dependent on building schedule, cladding options

and local building practices. If temporary fasteners are used

per this guideline, DuPont will provide a 10-yr limited

product replacement or materials and labor warranty.**

* For more detail on installation guidelines, please refer to

the DuPont™ Tyvek® Water-Resistive Barriers Installation

Guidelines at www.construction.tyvek.com.

** For more detail on the DuPont 10-yr limited product

replacement or materials and labor warranty, please refer

to the DuPont 10-yr limited product replacement or

materials and labor warranties detailed at

www.Construction.Tyvek.com.

Note:TheseTemporaryFasteningGuidelinesaresubjectto

change based on new technology or testing information

and may be superseded at any time. It is always important

to follow the latest guidelines which may be found on

www.construction.tyvek.com.

DuPont™ Tyvek® Water-Resistive Barrier Residential Installation Guide Addendum: use of Temporary Fastening Methods

For more information about DuPont™ Tyvek® Weatherization Systems, please call 1-800-44-Tyvek or visit us at www.Construction.Tyvek.com

Copyright © 2008 E. I. du Pont de Nemours and Company. All rights reserved. The DuPont Oval Logo, DuPont™, The miracles of science™ , Tyvek®, Tyvek® HomeWrap®, Tyvek® StuccoWrap®, Tyvek® DrainWrap™, Tyvek® CommercialWrap®, DuPont™ ThermaWrap™ , DuPont™ FlexWrap™, and DuPont™ StraightFlash™ are registered trademarks or trademarks of DuPont or its affiliates. K-16282 02/08

technical SpecificationsDuPont™ Tyvek® WRBs used in construction products is made from 100%flashspunbondedhighdensitypolyethylenefiberswhichhavebeen bonded together by heat and pressure, without binders or fillers, into a tough, durable sheet structure. Additives have been incorporated into the polyethylene to provide ultraviolet light resistance. DuPont requires that DuPont™ Tyvek® WRBs be covered within four months (120 days) of installation.

DuPont™ Flashing Systems products are made from a synthetic rubber adhesive and a laminate of polyethylene film, elastic fiber, synthetic rubberadhesive,polyurethaneadhesive,andatopsheetofflashspunbonded high density polyethylene fibers. Additives have been incorporated into these materials to provide ultraviolet light resistance. DuPont requires that DuPont™ Flashing Systems products be covered within four months (120 days) of installation.

WarningduPont™ tyvek® WrBs are slippery and should not be used in any application where it will be walked on. in addition, because it is slippery, duPont recommends using kickjacks or scaffolding for exterior work above the first floor. if ladders must be used, extra caution must be taken to use them safely by following the requirements set forth in Ansi standards 14.1, 14.2 and 14.5 for ladders made of wood, aluminum, and fiberglass, respectively. duPont™ tyvek® is combustible and should be protected from a flame and other high heat sources. duPont™ tyvek® will melt at 275°F (135°c) and if the temperature of duPont™ tyvek® reaches 750°F (400°c), it will burn and the fire may spread and fall away from the point of ignition. For more information, call 1-800-44-tyvek.

duPont™ Flashing systems products and their release paper are slippery and should not be walked on. remove release paper from work area immediately. duPont™ Flashing systems products will melt at temperatures greater than 250°F (121°c). duPont™ Flashing systems products are combustible and should be protected from flame and other high heat sources. duPont™ Flashing systems products will not support combustion if the heat source is removed. however, if burning occurs, ignited droplets may fall away from the point of ignition. For more information, call 1-800-44-tyvek.

duPont™ Weatherization sealant is irritating to skin, eyes, and respiratory tract. For proper usage, follow directions stated on the product label. For health information, refer to the material safety data sheet or call chemtrec at 1-800-424-9300.

NoteWhen installed in conjunction with other building materials, DuPont™ Flashing Systems products must be properly shingled with these materials, such that water is diverted to the exterior of the wall system. DuPont™ Tyvek® products are WRBs and not the primary water barrier (the outer facade is the primary barrier). You must follow façade manufacturer’s installation and maintenance requirements for all façade systems in order to maintain water holdout properties and ensure performance of DuPont™ Tyvek®. Use of additives, coatings or cleansers on or in the façade system may impact the performance of DuPont™ Tyvek® water-resistive barriers. DuPont™ Tyvek® Weatherization Systems products are to be used as outlined in this installation guideline. DuPont™ Flashing Systems products should only beusedtosealpenetrationsandflashopeningsinhousesorbuildings. DuPont™ Flashing Systems products are not to be used in roofing applications. For superior protection against bulk water penetration, DuPont suggests a system combining a quality exterior facade, a good secondary WRB, an exterior sheathing, appropriate flashingmaterialsanddetails.Inaddition,DuPontsuggeststousehigh quality windows and doors with particular attention to proper installation of each component. In a system where no exterior sheathing is used and DuPont™ Tyvek® is installed directly over the wall studs, exterior facade materials should be selected to ensure maximum protection against water intrusion. Careful workmanship and proper installation of each component is very important.

DuPont believes this information to be reliable and accurate. The information may be subject to revision as additional experience and knowledge is gained. It is the user’s responsibility to determine the proper construction materials needed.

For complete warranty information, please call 1-800-44-Tyvek. To submit a warranty claim, please contact DuPont at www.Construction.Tyvek.com or call 1-800-44-Tyvek. Warranty coverage requires submission of proof of purchase of the DuPont™ Tyvek® at issue.

This information is not intended to be used by others for advertising, promotion or other publication for commercial purposes.

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